using System;

///
// * jdbm LICENSE v1.00
// *
// * Redistribution and use of this software and associated documentation
// * ("Software"), with or without modification, are permitted provided
// * that the following conditions are met:
// *
// * 1. Redistributions of source code must retain copyright
// *    statements and notices.  Redistributions must also contain a
// *    copy of this document.
// *
// * 2. Redistributions in binary form must reproduce the
// *    above copyright notice, this list of conditions and the
// *    following disclaimer in the documentation and/or other
// *    materials provided with the distribution.
// *
// * 3. The name "jdbm" must not be used to endorse or promote
// *    products derived from this Software without prior written
// *    permission of Cees de Groot.  For written permission,
// *    please contact cg@cdegroot.com.
// *
// * 4. Products derived from this Software may not be called "jdbm"
// *    nor may "jdbm" appear in their names without prior written
// *    permission of Cees de Groot.
// *
// * 5. Due credit should be given to the jdbm Project
// *    (http://jdbm.sourceforge.net/).
// *
// * THIS SOFTWARE IS PROVIDED BY THE ndbm PROJECT AND CONTRIBUTORS
// * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
// * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
// * CEES DE GROOT OR ANY CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// * OF THE POSSIBILITY OF SUCH DAMAGE.
// *
// * Copyright 2000 (C) Cees de Groot. All Rights Reserved.
// * Copyright 2000-2001 (C) Alex Boisvert. All Rights Reserved.
// * Contributions are Copyright (C) 2000 by their associated contributors.
// *
// * $Id: Provider.java,v 1.3 2005/06/25 23:12:32 doomdark Exp $
// 

//*************************************************************************
//**  Included in JDMB 1.0 port to SharpDBM;  11/2013 Cyrus Neah cneah@codingreal.com
//**  SharpDBM is an independent reimplementation of the JDBM 1.0 software library in C#  
//*************************************************************************

namespace SharpDBM.recman
{


	using RecordManager = SharpDBM.RecordManager;
	using RecordManagerOptions = SharpDBM.RecordManagerOptions;
	using RecordManagerProvider = SharpDBM.RecordManagerProvider;

	using MRU = SharpDBM.helper.MRU;
    using System.Configuration;

///
// * Provider of the default RecordManager implementation.
// *
// * @author <a href="mailto:boisvert@intalio.com">Alex Boisvert</a>
// * @version $Id: Provider.java,v 1.3 2005/06/25 23:12:32 doomdark Exp $
// 
	public   class Provider : RecordManagerProvider
	{

//    *
//     * Create a default implementation record manager.
//     *
//     * @param name Name of the record file.
//     * @param options Record manager options.
//     * @throws IOException if an I/O related exception occurs while creating
//     *                    or opening the record manager.
//     * @throws UnsupportedOperationException if some options are not supported by the
//     *                                      implementation.
//     * @throws ArgumentOutOfRangeException if some options are invalid.
//     

        public virtual RecordManager createRecordManager(string name)
		{
			RecordManager recman;
			string @value;
            int cacheSize;

			recman = new BaseRecordManager(name);

            @value = System.Configuration.ConfigurationManager.AppSettings["DISABLE_TRANSACTIONS"];
			if (@value.Equals("TRUE",StringComparison.InvariantCultureIgnoreCase))
			{
				((BaseRecordManager) recman).disableTransactions();
			}

			@value = System.Configuration.ConfigurationManager.AppSettings["CACHE_SIZE"];
			cacheSize = Convert.ToInt32(@value);

			@value = System.Configuration.ConfigurationManager.AppSettings["CACHE_TYPE"];
			if (@value.Equals(RecordManagerOptions.NORMAL_CACHE,StringComparison.InvariantCultureIgnoreCase))
			{
				MRU cache = new MRU(cacheSize);
				recman = new CacheRecordManager(recman, cache);
			}
            else if (@value.Equals(RecordManagerOptions.SOFT_REF_CACHE, StringComparison.InvariantCultureIgnoreCase))
			{
				throw new ArgumentOutOfRangeException("Soft reference cache not implemented");
			}
            else if (@value.Equals(RecordManagerOptions.WEAK_REF_CACHE, StringComparison.InvariantCultureIgnoreCase))
			{
				throw new ArgumentOutOfRangeException("Weak reference cache not implemented");
			}
			else
			{
				throw new ArgumentOutOfRangeException("Invalid cache type: " + @value);
			}

			return recman;
		}


	}

}